Police officers are now having to show that their life is threatened by criminals do you think this is fair? why?

A threat to one officer, may not be a threat to another! You must articulate how he/she were a threat to you based on the factors presented to you at that point in time causing you to use force to neutralize the threat! This has always been the case. Nothing new!

I think this is geared towards certain elements of this group. But i'll assume you want an honest discussion (sans emotions) so I'll say this. Why is that a bad thing? If you are given the authority to take a life, said authority should have some constraints. You'd hope that any LEA that drew their weapon did so because of a legitimate threat and not as a tool to force compliance or as an extension of their manhood/ womanhood. So yes I think it is fair to demand that if a service weapon is used in the line of duty, the Police Officer should have done so only in order to subdue a clear and lethal threat. Not exactly the "Police can do no wrong" answer, but it is an honest one.

Is this any different than when we get issued ROE? seems fair to ask them to act responsibly and prove the nessesity of their actions.